A common requirement in realtime apps is to insert business logic into a message processing pipeline. Rather than offering our own functions, Ably supports these use-cases by providing a reliable gateway to invoke cloud functions or further process messages via the best available cloud services.

Ably's Lead Distributed Systems Engineer takes us on a journey of obscure settings, red herrings, and poll vs. epoll through Elixir and Erlang, and shares lessons learned from hunting down an obscure setting in the Erlang VM.